Investment in Unconsolidated Joint Ventures - Investment (Details) $ in Thousands	12 Months Ended
Dec. 31, 2017 USD ($) loan property	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)
Investment in Unconsolidated Joint Ventures
Income from unconsolidated joint ventures	$ 2,263	$ 1,138	$ 1,819
Distribution from unconsolidated joint ventures	$ 1,738	1,695	552
Joint Venture
Investment in Unconsolidated Joint Ventures
Number of Loans \| loan	2
Joint Venture \| Not primary beneficiary \| Preferred Equity Investment
Investment in Unconsolidated Joint Ventures
Total preferred capital contributions in joint venture	$ 25,650
Number of properties owned by joint venture \| property	4
Preferred return percentage	15.00%
Common members capital account balance	$ 0
Deferred preferred return accrued	0	0	1,000
Additional preferred capital contribution commitment	1,101	1,770	23,042
Income from unconsolidated joint ventures	1,560	1,138	1,819
Distribution from unconsolidated joint ventures	$ 1,436	$ 1,695	$ 552

Amount of joint venture capital account attributable to common members.

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Amount of preferred return accrued during the period from investment in joint ventures.

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Represents the preferred return percentage on the investment in the joint venture.

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Represents the number of properties owned by the joint venture.

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Represents the total preferred capital contributions in the joint venture.

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Amount of distribution received from equity method investee for return on investment, classified as operating activities. Excludes distribution for return of investment, classified as investing activities.

+ References

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This item represents the entity's proportionate share for the period of the net income (loss) of its investee (such as unconsolidated subsidiaries and joint ventures) to which the equity method of accounting is applied. This item includes income or expense related to stock-based compensation based on the investor's grant of stock to employees of an equity method investee.

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Indicates the number of mortgages under each classification.

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The amount of financial or other support the reporting entity has provided (explicitly or implicitly) to the Variable Interest Entity (VIE) that it was not previously contractually required to provide or that the reporting entity intends to provide, including, for example, situations in which the reporting entity assisted the VIE in obtaining another type of support.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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